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authorChuck Lever <chuck.lever@oracle.com>2019-02-11 19:25:20 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-02-14 18:04:37 +0300
commitcf500bac8fd48b57f38ece890235923d4ed5ee91 (patch)
treecde3b6cb76a940f87e934f2c8855195ba08aa232 /net/sunrpc/xdr.c
parent2573a46499956c2ff311e1a65052364243161e78 (diff)
downloadlinux-cf500bac8fd48b57f38ece890235923d4ed5ee91.tar.xz
SUNRPC: Introduce rpc_prepare_reply_pages()
prepare_reply_buffer() and its NFSv4 equivalents expose the details of the RPC header and the auth slack values to upper layer consumers, creating a layering violation, and duplicating code. Remedy these issues by adding a new RPC client API that hides those details from upper layers in a common helper function. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xdr.c')
-rw-r--r--net/sunrpc/xdr.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 4bce61978062..7cca51560442 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -163,6 +163,15 @@ xdr_free_bvec(struct xdr_buf *buf)
buf->bvec = NULL;
}
+/**
+ * xdr_inline_pages - Prepare receive buffer for a large reply
+ * @xdr: xdr_buf into which reply will be placed
+ * @offset: expected offset where data payload will start, in bytes
+ * @pages: vector of struct page pointers
+ * @base: offset in first page where receive should start, in bytes
+ * @len: expected size of the upper layer data payload, in bytes
+ *
+ */
void
xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
struct page **pages, unsigned int base, unsigned int len)